ethyl 2-<(p-nitrobenzenesulfonyl)oxy>-3-hydroxybutanoate
(3R,4S)-1,4-Diphenyl-3-((S)-1-trimethylsilanyloxy-ethyl)-azetidin-2-one
(2R,3S)-3-Hydroxy-2-((S)-phenyl-phenylamino-methyl)-butyric acid ethyl ester
(4S,5R,6S)-6-Methyl-2-oxo-3,4-diphenyl-[1,3]oxazinane-5-carboxylic acid ethyl ester
ethyl cis-3-methyl-1-oxirane-2-carboxylate